<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
</head>

<body>
  <style>
    /**
 * Animation along a circular path - Solution 1
 */
    /*而在这里，我们将会用到reverse 这个值，它可以得到原始动画的反向
版本，这样我们就可以利用一套关键帧实现两套旋转动画：*/
    
    @keyframes spin {
      to {
        transform: rotate(1turn);
      }
    }
    
    .avatar {
      /*animation: spin 3s infinite linear;*/
      transform-origin: 50% 150px;
    }
    
    .avatar>img {
      animation: inherit;
      animation-direction: reverse;
    }
    /* Anything below this is just styling */
    
    .avatar {
      width: 50px;
      margin: 0 auto;
      border-radius: 50%;
      overflow: hidden;
    }
    
    .avatar>img {
      display: block;
      width: inherit;
    }
    
    .path {
      width: 300px;
      height: 300px;
      padding: 20px;
      border-radius: 50%;
      background: #fb3;
    }
  </style>
  <div class="path">
    <div class="avatar">
      <img src="http://lea.verou.me/book/adamcatlace.jpg" />
    </div>
  </div>
</body>

</html>